20943224 has 16 divisors (see below), whose sum is σ = 39742920. Its totient is φ = 10345120.

The previous prime is 20943203. The next prime is 20943253. The reversal of 20943224 is 42234902.

It is a junction number, because it is equal to n+sod(n) for n = 20943193 and 20943202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15107 + ... + 16434.

Almost surely, 2^20943224 is an apocalyptic number.

It is an amenable number.

20943224 is a deficient number, since it is larger than the sum of its proper divisors (18799696).

20943224 is a wasteful number, since it uses less digits than its factorization.

20943224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31630 (or 31626 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20943224 is about 4576.3767327439. The cubic root of 20943224 is about 275.6435572301.

The spelling of 20943224 in words is "twenty million, nine hundred forty-three thousand, two hundred twenty-four".